Height adjustable connection of a rail to a tie



April 1957 G. KRABBENDAM 2,787,421

HEIGHTADJUS TABLE CONNECTION OF A RAIL TO A TIE Filed June 9. 1953, 2Sheets-Sheet 1 April 2, 1957 I s. KRABBENDAM 2,787,421

HEIGHT ADJUSTABLE CONNECTION OF A RAIL. To A TIE Filed June 9, 1953 2Sheets-Sheet 2 INVENTOR. Graral KR/ijflE/tQA/W HEIGHT ADJUSTABLECONNECTION OF A RAIL TO A TIE Gerard Krabbendam, Zeist, NetherlandsApplication June 9, 1953, Serial No. 360,553

2 Claims. (Cl. 238-281) The invention relates to a connection adjustablein the height of a rail on a bearing member, such as a crosstie, bymeans of a wedge arranged between the bearing member and the rail. Thesewedges serve to adjust the rail accurately in the height, so that it isnot necessary any more to introduce material under the sleeper. Theunequal depression of the ties is a result of the unequal formation ofthe ballast-bed. In consequence of the compression of this ballast-bed arather hard under-layer is obtained, which would be disturbed when newmaterial is brought underneath. If now by the unequal depression a tiecomes to lie loose, it is only necessary to strike against the Wedge, inorder to press the tie again firmly on the ballast-bed. These wedgeshave the drawback that they can easily be loosened by vibration becausethey are clamped on the inclined wedge face, giving rise to a lateralcomponent, which loosens the wedge. It has been endeavoured to removethis objection by using a stepped member instead of a wedge, but in sodoing an accurate control is not possible, since one has to depend onthe height of the steps.

The purpose of the invention is to remove these drawbacks and to providea wedge which is not released by vibration during the trafiic and inwhich it is possible to adjust the rail at any desired level.

According to the invention this is attained in that the wedge can befixed in any desired position by clamping at least a part of the sidefaces. According to the invention it is possible as well to provide thewedge along the side faces with an inclined surface, arotmd which a clawof the connecting device of the rail engages, which claw again providesthe lateral clamping. In this case the claw can be provided with one ormore teeth engaging teeth provided along the side face of the wedge.

The invention will be elucidated by the drawing by means of twoembodiments.

Fig. 1 is a first embodiment in cross-section of a connection of a railaccording to the invention;

Fig. 2 is a plan view of same;

Fig. 3 is a side view in perspective of a second embodiment of aconnection according to the invention.

The connection has a base plate 1 on the tie 2. The base plate 1possesses four upright parts 3, 4, and 6; the parts 3 and 4 are situatedat one side of the rail 7 and the parts 5 and 6 at the other side ofsame. These protruding parts fix the plate of the foot of the rail 7 inthe horizontal plane and at the same time form rectangular to same theguides for the wedge 8. The wedge has the angle which at horizontaltrack the upper face of the head of the rail makes with a horizontalplane.

By striking the wedge further underneath the rail a ited States Patent 0ice loose cross-tie becomes portable without being dug out at the lowerside and applying an excess of material. The connection of the rail 7 isfurthermore carried out by two clamping plates 9 in which a recess isprovided and which at the one side bear on the foot of the rail and atthe other side directly or indirectly on the wedge. These clampingplates are pressed down by means of two clamping bolts 10 which arescrewed into bridgepieces 11, the bolts bearing in the recesses of theclamping plates. The bridge-pieces 11 are connected with the uprightparts 3, 4, 5 and 6.

It desired, these parts are arranged interchangeably. The wedge 8 islocked against receding by screwing-on a bolt 12 which passes throughtwo slits in wings of the parts 5 and 6. The wings are so connected thatthey are pressed toward the wedge. In this way the wedge is locked atthe side face by friction of the wings against the parallel side facesof the wedge.

In Fig. 3 the bolts 10 are arranged in loose bridgepieces 14, which withtheir ends extend into apertures of the upright parts 13. These partsmay be U-profiles which are welded to the plate 1 or in the case thatconcrete cross-ties are applied, are embedded in the concrete. Theclamping plates 15 are provided with a U-like part which clamps achamfiered side 16 of the wedge 8.

The inclination of this chamfered face 6 is such that there is aquestion of a lateral clamping. Also these U-like parts having the shapeof a claw may be provided with teeth engaging indentations 17, alongside face of the wedge. Now it is not necessary any more to applyseparate wings, since with this embodiment the clamping plates providefor the lateral clamping.

I claim:

1. Height adjustable connection of a rail to a bearing member,comprising: a wedge member located between the bearing member and therail, said wedge member having longitudinally extending upper and lowersurfaces inclined relative to each other and having a pair oflongitudinally extending side surfaces, portions of said upper and lowersurfaces of the Wedge member being engaged with said rail and saidbearing member respectively, and clamping means securing the wedgemember in its position, said clamping means being engaged with portionsof said longitudinally extending side surfaces of said wedge member.

2. In a height adjustable connection of a rail to a bearing member asclaimed in claim 1, each of said side surfaces of the wedge member beingchamfered at its upper portion so as to form longitudinally extendingchamfered surfaces, and said clamping means being in engagement withportions of said chamfered surfaces.

References Cited in the file of this patent UNITED STATES PATENTS376,250 Marks Jan. 10, 1888 633,500 Burger Sept. 19, 1889 882,964Rambacher Mar. 24, 1908 1,045,550 Henderson Nov. 26, 1912 1,126,513Liebmann Jan. 26, 1915 1,126,525 Liebmann Jan. 26, 1915 1,126,529Liebmann Jan. 26, 1915 1,279,723 Liebmann Sept. 24, 1918 1,561,189Sautreau Nov. 10, 1925 2,017,395 Boyd et a1. Oct. 15, 1935 2,421,992Chance June 10, 1947

